Final Report. Contract Number Title of Research Principal Investigator
|
|
- Bertram Collins
- 5 years ago
- Views:
Transcription
1 Final Report Contract Number Title of Research Principal Investigator Organization N AIGaN/GaN HEMTs on semi-insulating GaN substrates by MOCVD and MBE Dr Umesh Mishra University of California, Santa Barbara
2 DEFENSE TECHNICAL INFORMATION CENTER DTIC has determined on // / j loi&vn that this Technical Document has the Distribution Statement checked below. The current distribution for this document can be found in the DTIC Technical Report Database. JZI DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. D«-r owl\ COPYRIGHTED; U.S. Government or Federal Rights License. All other rights and uses except those permitted by copyright law are reserved by the copyright owner. DISTRIBUTION STATEMENT B. Distribution authorized to U.S. Government agencies only (fill in reason) (date of determination). Other requests for this document shall be referred to (insert controlling DoD office) DISTRIBUTION STATEMENT C. Distribution authorized to U.S. Government Agencies and their contractors (fill in reason) (date of determination). Other requests for this document shall be referred to (insert controlling DoD office) DISTRIBUTION STATEMENT D. Distribution authorized to the Department of Defense and U.S. DoD contractors only (fill in reason) (date of determination). Other requests shall be referred to (insert controlling DoD office). DISTRIBUTION STATEMENT E. Distribution authorized to DoD Components only (fill in reason) (date of determination). Other requests shall be referred to (insert controlling DoD office). DISTRIBUTION STATEMENT F. Further dissemination only as directed by (inserting controlling DoD office) (date of determination) or higher DoD authority. Distribution Statement F is also used when a document does not contain a distribution statement and no distribution statement can be determined. DISTRIBUTION STATEMENT X. Distribution authorized to U.S. Government Agencies and private individuals or enterprises eligible to obtain export-controlled technical data in accordance with DoDD ; (date of determination). DoD Controlling Office is (insert controlling DoD office).
3 Abstract Silicon (Si) implantation into AIGaN/GaN high electron mobility transistors (HEMTs) has been studied in this program as a method to reduce the sharp increase in the dynamic source resistance at increasing current levels that result in a reduction both in the transconductance g m and the current gain cut-off frequency fj. During the program two different approaches have been investigated to decrease the electric field in the source access region. To prevent breakdown between source and gate, different barrier layers have been investigated. Ultimately, these barriers allow an overlap between the gate and the source implant region. First, a regrown AIGaN/GaN channel as the barrier between the source implant region and the gate has been investigated. In the past, silicon has been found to create a buried parasitic layer conductive path at the re-grown interface. In this work, multiple-cycle treatment with hydrofluoric acid and ozone was used to reduce the silicon at the regrowth interface by 80%. Second, using silicon nitride (SiN) as the barrier layer between the implanted source region and the gate allowed a regrowth free structure. MOCVD grown SiN was deposited in situ after the activation anneal of the implanted silicon. With channels lengths down to 0.3 jam and gate lengths of 200 nm, these devices exhibited constant dynamic source resistances which improved the transconductance linearity at high current levels significantly.
4 Contract Information Contract Number Title of Research Principal Investigator Organization N AIGaN/GaN HEMTs on semi-insulating GaN substrates by MOCVD and MBE Dr Umesh Mishra University of California, Santa Barbara Introduction AIGaN/GaN HEMTs have demonstrated record power densities at microwave operation [1]. However, these devices usually exhibit a fast decrease in current gain cut-off frequency fr. Most of the decrease in fj can be attributed to the decrease of g m at high currents. This decrease can be explained by the increase of the small signal source access resistance, r s, with drain current. Since the electron velocity varies with the electric field, a decrease in the electron mobility for high fields is most likely the reason for this increase of access resistance [2]. Sample A col o c I 1 o ; 1 is q> 100 nm Sample B Sample C 450 ATLAS Simulations 1 1 > 1 > 1 ' 1 > <-«300 _ E g (/) S E O) , Sample A: Std.HEMT Sample B: Source n* layer to Ihe gate Sample C: Source n* layer 100 nm from gale edge " V Rfi (V) Fig 1: Left: Proposed structures to increase the linearity of g m and f T. Right: Simulated g m profiles by ATLAS -
5 A g m linearity improvement can be achieved if the electric field at the source can be kept below its quasi saturation value (-10 kv/cm). ATLAS simulations have shown that an introduction of low resistivity areas between the source and the gate can improve the linearity (Fig 1), [2]. To create the structure Sample B in Fig. 1, ion implantation is a promising technology after excellent low sheet resistances as low as 14 Ohm/ Square have been demonstrated [3]. An important feature of this structure is the barrier layer that separates the gate from the implanted source region, avoiding high leakage current or even breakdown between the gate and source. In this program, two different approached have been investigated to form this barrier layer. The results are described in the following section.
6 Barrier layer by channel regrowth Figure 2 shows a schematic cross section of the AIGaN/GaN HEMT with buried implants. The barrier between the implanted source region and the gate consists of a regrown AIGaN/GaN channel. Source Gate Drain S AIGaN GaN Channel i+ GaN buffer Si + GaN:Fe Fig 2: AIGaN/GaN HEMT with buried Si- implants The process flow involves implanting highly doped source and drain regions into an insulating GaN substrate and then regrowing the GaN channel and AIGaN barrier layer. A significant challenge in this approach is the formation of a Si layer on the surface after removing the GaN substrate from the growth chamber (MBE and MOCVD) and preparing it for implantation. In a regrown HEMT structure, this Si layer forms a parasitic conductive leakage path parallel to the 2 DEG. To mitigate this effect, a cycled UV ozone treatment was employed. Prior to regrowth, the GaN buffer surface was exposed twice to a 5 min ozone treatment followed by 30 sec hydrofluoric acid (HF) dip. Ozone treatment enhances the oxidation of the Si layer. HF treatment then removes the formed oxide layer.
7 Figure 3 shows the DC IV curve of a regrown AIGaN/GaN structure with (a) no ozone treatment and (b) cycled ozone treatment before regrowth r V G = + 1V NoOzone Ozone g E 400 AV G = 1V V) Q 200 V. [V] DS Figure 3: DC l-v curve of regrown AIGaN/GaN HEMT (a) with ozone/hf treatment and (b) no treatment before regrowth. It can be observed that both devices do not pinch off. Nevertheless, a reduction in leakage current for the ozone treated sample is obvious. An 80% reduction of silicon concentration at the interface was observed. Although significant, this reduction was not sufficient for transistor applications. Further cycling of ozone and HF treatment did not completely remove the parasitic layer.
8 Buried Implant by metal insulator semiconductor heterostructure FET (MISHFET) The second approach under this program was the investigation of an AIGaN/GaN metal insulator semiconductor heterostructure FET (MISHFET) structure that allows the overlap of gate and implanted source region (Fig. 4). Figure 4: Schematic of an AIGaN/GaN metal insulator semiconductor heterostructure FET (MISHFET) Previously, ion implantation has been demonstrated to be an excellent choice to form contact resistances as low as 0.2 Qmm to HEMT structures [4]. Figure 4 shows a schematic of the MISHFET structure. Fabrication of the MISHFET started with deposition of a Si0 2 /Ti/Ni ion implantation mask with Ti/Ni removed in the source and drain regions (S/D) for implantation. Source to drain spacing was 0.4 am. Si ions at a dose of 1 * cm" 2 were implanted at 0 at 60 kev at room temperature. After the implantation mask was removed the sample was subject to an activation anneal for 30 sec at C in an MOCVD system flowing N 2 and NH3at atmospheric pressure (760 Torr). A 5 nm SiN layer was deposited in situ. The AIGaN layer was removed in the S/D regions using CI2 reactive ion etching (RIE) and ohmic
9 Ti/Au/Ni contacts were deposited onto the underlying implanted GaN. A contact resistance of 0.5 Qmm was obtained. Ni/Au/Ni gates were formed by ebeam lithography (300 nm). The overlap between the implanted source region and the gate was 100 nm. SD121408A-D R7C3T28 AV = 0.5V v = ov SD12H08A-DR7C2T28 E E 5-1 I i L_ Figure 5: Left: DC-IV curve; Right: g m -l D curve of 0.4 nm channel MISHFET Figure 5 left depicts the DC IV curve with a maximum drain current of 1.5 A/mm at a drain bias of V D s=3.6 V. Figure 5 right shows g m and l D versus gate voltage. The device exhibits a maximum transconductance of 350 ms/mm and the drop of g m at high current is minimal. SD121408A-D R7C2T28 V«M Figure 6: Current-gain cutoff frequency f T versus gate voltage
10 Figure 6 shows fj versus gate voltage. The sharp drop in g m and f T as described by Palacios et al. [2] is not observed. References: [1] Y.F. Wu, A. Saxler, M. Moore, R.P. Smith, S. Sheppard, P.M. Chavarkar, T. Wisleder, U.K. Mishra, and P.Parikh, "30 W/mm GaN HEMTs by field plate optimization," IEEE Electron Dev Lett, vol. 25, no. 2, pp , Feb 2004 [2] T. Palacios, S. Rajan, A. Chakraborty, S. Heikman, S. Keller, S.P. DenBaars, U.K. Mishra, "Influence of the Dynamic Access Resistance in the g m and f T Linearity of AIGaN/GaN HEMTs," IEEE Trans. Elect. Dev, vol 52, no 10, pp , Oct 2005 [3] H. Yu, L. McCarthy, S. Rajan, S. Keller, S. DenBaars, J. Speck, U. Mishra," Ion Implanted AIGaN/GaN HEMTs With Nonalloyed Ohmic Contacts," IEEE Elect Dev Lett, vol 26, no 5, pp , May 2005 [4] F.Recht, L. McCarthy, L. Shen, C. Poblenz, A.Corrion, J.S. Speck, U.K. Mishra, "AIGaN/GaN HEMTs with large angle Implanted Nonalloyed Ohmic Contacts," 65th Device Research Conference, South Bend, IN, 2007
11 Dear Sir or Madam, Please find attached the final report for N (UC Santa Barbara, Prof. Mishra). I apologize for the delay. Best Regards, TtcLf Felix Recht ECE Dept UC Santa Barbara Santa Barbara, CA recht@ece.ucsb.edu
GaN power electronics
GaN power electronics The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation As Published Publisher Lu, Bin, Daniel Piedra, and
More informationWu Lu Department of Electrical and Computer Engineering and Microelectronics Laboratory, University of Illinois, Urbana, Illinois 61801
Comparative study of self-aligned and nonself-aligned SiGe p-metal oxide semiconductor modulation-doped field effect transistors with nanometer gate lengths Wu Lu Department of Electrical and Computer
More informationGallium nitride (GaN)
80 Technology focus: GaN power electronics Vertical, CMOS and dual-gate approaches to gallium nitride power electronics US research company HRL Laboratories has published a number of papers concerning
More informationN-polar GaN/ AlGaN/ GaN high electron mobility transistors
JOURNAL OF APPLIED PHYSICS 102, 044501 2007 N-polar GaN/ AlGaN/ GaN high electron mobility transistors Siddharth Rajan a Electrical and Computer Engineering Department, University of California, Santa
More informationFABRICATION OF SELF-ALIGNED T-GATE AlGaN/GaN HIGH
International Journal of High Speed Electronics and Systems World Scientific Vol. 14, No. 3 (24) 85-89 wworldscientific World Scientific Publishing Company www.worldsclentific.com FABRICATION OF SELF-ALIGNED
More informationInternational Workshop on Nitride Semiconductors (IWN 2016)
International Workshop on Nitride Semiconductors (IWN 2016) Sheng Jiang The University of Sheffield Introduction The 2016 International Workshop on Nitride Semiconductors (IWN 2016) conference is held
More informationSIDDHARTH RAJAN. Physics B.S., 2001
Research Interests SIDDHARTH RAJAN High-speed electronic devices, wide bandgap power switching transistors, nanoscale material and device design, biological and chemical sensors, molecular beam epitaxy,
More informationDesign of Enhancement Mode Single-gate and Double-gate Multi-channel GaN HEMT with Vertical Polarity Inversion Heterostructure
MITSUBISHI ELECTRIC RESEARCH LABORATORIES http://www.merl.com Design of Enhancement Mode Single-gate and Double-gate Multi-channel GaN HEMT with Vertical Polarity Inversion Heterostructure Feng, P.; Teo,
More informationNormally-Off Operation of AlGaN/GaN Heterojunction Field-Effect Transistor with Clamping Diode
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.16, NO.2, APRIL, 2016 ISSN(Print) 1598-1657 http://dx.doi.org/10.5573/jsts.2016.16.2.221 ISSN(Online) 2233-4866 Normally-Off Operation of AlGaN/GaN
More informationAlGaN/GaN High-Electron-Mobility Transistor Using a Trench Structure for High-Voltage Switching Applications
Applied Physics Research; Vol. 4, No. 4; 212 ISSN 19169639 EISSN 19169647 Published by Canadian Center of Science and Education AlGaN/GaN HighElectronMobility Transistor Using a Trench Structure for HighVoltage
More informationA new Hetero-material Stepped Gate (HSG) SOI LDMOS for RF Power Amplifier Applications
A new Hetero-material Stepped Gate (HSG) SOI LDMOS for RF Power Amplifier Applications Radhakrishnan Sithanandam and M. Jagadesh Kumar, Senior Member, IEEE Department of Electrical Engineering Indian Institute
More informationDevelopment of Microwave and Terahertz Detectors Utilizing AlN/GaN High Electron Mobility Transistors
Development of Microwave and Terahertz Detectors Utilizing AlN/GaN High Electron Mobility Transistors L. Liu 1, 2,*, B. Sensale-Rodriguez 1, Z. Zhang 1, T. Zimmermann 1, Y. Cao 1, D. Jena 1, P. Fay 1,
More informationDefense Technical Information Center Compilation Part Notice
UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADP015074 TITLE: Channel Recessed 4H-SiC MESFETs with Ft o f14.5ghz and F max of 40GHz DISTRIBUTION: Approved for public release,
More informationNovel III-Nitride HEMTs
IEEE EDS Distinguished Lecture Boston Chapter, July 6 2005 Novel III-Nitride HEMTs Professor Kei May Lau Department of Electrical and Electronic Engineering Hong Kong University of Science and Technology
More informationHigh Power Wideband AlGaN/GaN HEMT Feedback. Amplifier Module with Drain and Feedback Loop. Inductances
High Power Wideband AlGaN/GaN HEMT Feedback Amplifier Module with Drain and Feedback Loop Inductances Y. Chung, S. Cai, W. Lee, Y. Lin, C. P. Wen, Fellow, IEEE, K. L. Wang, Fellow, IEEE, and T. Itoh, Fellow,
More informationEnhancement-mode AlGaN/GaN HEMTs on silicon substrate
phys. stat. sol. (c) 3, No. 6, 368 37 (6) / DOI 1.1/pssc.565119 Enhancement-mode AlGaN/GaN HEMTs on silicon substrate Shuo Jia, Yong Cai, Deliang Wang, Baoshun Zhang, Kei May Lau, and Kevin J. Chen * Department
More informationimproving further the mobility, and therefore the channel conductivity. The positive pattern definition proposed by Hirayama [6] was much improved in
The two-dimensional systems embedded in modulation-doped heterostructures are a very interesting and actual research field. The FIB implantation technique can be successfully used to fabricate using these
More informationSelf-Aligned-Gate GaN-HEMTs with Heavily-Doped n + -GaN Ohmic Contacts to 2DEG
Self-Aligned-Gate GaN-HEMTs with Heavily-Doped n + -GaN Ohmic Contacts to 2DEG K. Shinohara, D. Regan, A. Corrion, D. Brown, Y. Tang, J. Wong, G. Candia, A. Schmitz, H. Fung, S. Kim, and M. Micovic HRL
More informationRecord Extrinsic Transconductance (2.45 ms/μm at V DS = 0.5 V) InAs/In 0.53 Ga 0.47 As Channel MOSFETs Using MOCVD Source-Drain Regrowth
Record Extrinsic Transconductance (2.45 ms/μm at = 0.5 V) InAs/In 0.53 Ga 7 As Channel MOSFETs Using MOCVD Source-Drain Regrowth Sanghoon Lee 1*, C.-Y. Huang 1, A. D. Carter 1, D. C. Elias 1, J. J. M.
More informationSemiconductor Materials for Power Electronics (SEMPEL) GaN power electronics materials
Semiconductor Materials for Power Electronics (SEMPEL) GaN power electronics materials Kjeld Pedersen Department of Physics and Nanotechnology, AAU SEMPEL Semiconductor Materials for Power Electronics
More informationScaling of InGaAs MOSFETs into deep-submicron regime (invited)
Scaling of InGaAs MOSFETs into deep-submicron regime (invited) Y.Q. Wu, J.J. Gu, and P.D. Ye * School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906 * Tel: 765-494-7611,
More informationWe are right on schedule for this deliverable. 4.1 Introduction:
DELIVERABLE # 4: GaN Devices Faculty: Dipankar Saha, Subhabrata Dhar, Subhananda Chakrabati, J Vasi Researchers & Students: Sreenivas Subramanian, Tarakeshwar C. Patil, A. Mukherjee, A. Ghosh, Prantik
More information4H-SiC Planar MESFET for Microwave Power Device Applications
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.5, NO.2, JUNE, 2005 113 4H-SiC Planar MESFET for Microwave Power Device Applications Hoon Joo Na*, Sang Yong Jung*, Jeong Hyun Moon*, Jeong Hyuk Yim*,
More informationRF and Microwave Semiconductor Technologies
RF and Microwave Semiconductor Technologies Muhammad Fahim Ul Haque, Department of Electrical Engineering, Linköping University muhha@isy.liu.se Note: 1. This presentation is for the course of State of
More informationNAME: Last First Signature
UNIVERSITY OF CALIFORNIA, BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE 130: IC Devices Spring 2003 FINAL EXAMINATION NAME: Last First Signature STUDENT
More informationA New SiGe Base Lateral PNM Schottky Collector. Bipolar Transistor on SOI for Non Saturating. VLSI Logic Design
A ew SiGe Base Lateral PM Schottky Collector Bipolar Transistor on SOI for on Saturating VLSI Logic Design Abstract A novel bipolar transistor structure, namely, SiGe base lateral PM Schottky collector
More information3-D Modelling of the Novel Nanoscale Screen-Grid Field Effect Transistor (SGFET)
3-D Modelling of the Novel Nanoscale Screen-Grid Field Effect Transistor (SGFET) Pei W. Ding, Kristel Fobelets Department of Electrical Engineering, Imperial College London, U.K. J. E. Velazquez-Perez
More informationIII-V CMOS: the key to sub-10 nm electronics?
III-V CMOS: the key to sub-10 nm electronics? J. A. del Alamo Microsystems Technology Laboratories, MIT 2011 MRS Spring Meeting and Exhibition Symposium P: Interface Engineering for Post-CMOS Emerging
More informationn-channel LDMOS WITH STI FOR BREAKDOWN VOLTAGE ENHANCEMENT AND IMPROVED R ON
n-channel LDMOS WITH STI FOR BREAKDOWN VOLTAGE ENHANCEMENT AND IMPROVED R ON 1 SUNITHA HD, 2 KESHAVENI N 1 Asstt Prof., Department of Electronics Engineering, EPCET, Bangalore 2 Prof., Department of Electronics
More informationPerformance investigations of novel dual-material gate (DMG) MOSFET with dielectric pockets (DP)
Science in China Series E: Technological Sciences 2009 SCIENCE IN CHINA PRESS www.scichina.com tech.scichina.com Performance investigations of novel dual-material gate (DMG) MOSFET with dielectric pockets
More informationLow-frequency noises in GaAs MESFET s currents associated with substrate conductivity and channel-substrate junction
Article Optoelectronics April 2011 Vol.56 No.12: 1267 1271 doi: 10.1007/s11434-010-4148-6 SPECIAL TOPICS: Low-frequency noises in GaAs MESFET s currents associated with substrate conductivity and channel-substrate
More informationParasitic Resistance Effects on Mobility Extraction of Normally-off AlGaN/GaN Gate-recessed MISHFETs
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.18, NO.1, FEBRUARY, 2018 ISSN(Print) 1598-1657 https://doi.org/10.5573/jsts.2018.18.1.078 ISSN(Online) 2233-4866 Parasitic Resistance Effects on Mobility
More informationEECS130 Integrated Circuit Devices
EECS130 Integrated Circuit Devices Professor Ali Javey 11/6/2007 MOSFETs Lecture 6 BJTs- Lecture 1 Reading Assignment: Chapter 10 More Scalable Device Structures Vertical Scaling is important. For example,
More informationModeling of CPW Based Passive Networks using Sonnet Simulations for High Efficiency Power Amplifier MMIC Design
ACES JOURNAL, VOL. 26, NO. 2, FEBRUARY 211 131 Modeling of CPW Based Passive Networks using Simulations for High Efficiency Power Amplifier MMIC Design Valiallah Zomorrodian, U. K. Mishra, and Robert A.
More informationGeneral look back at MESFET processing. General principles of heterostructure use in FETs
SMA5111 - Compound Semiconductors Lecture 11 - Heterojunction FETs - General HJFETs, HFETs Last items from Lec. 10 Depletion mode vs enhancement mode logic Complementary FET logic (none exists, or is likely
More informationScaling and High-Frequency Performance of AlN/GaN HEMTs
Scaling and High-Frequency Performance of AlN/GaN HEMTs Xi Luo 1, Subrata Halder 1, Walter R. Curtice 1, James C. M. Hwang 1, Kelson D. Chabak 2, Dennis E. Walker, Jr. 2, and Amir M. Dabiran 3 1 Lehigh
More informationToday s wireless system
From May 2009 High Frequency Electronics Copyright 2009 Summit Technical Media, LLC High-Power, High-Efficiency GaN HEMT Power Amplifiers for 4G Applications By Simon Wood, Ray Pengelly, Don Farrell, and
More informationRecord I on (0.50 ma/μm at V DD = 0.5 V and I off = 100 na/μm) 25 nm-gate-length ZrO 2 /InAs/InAlAs MOSFETs
Record I on (0.50 ma/μm at V DD = 0.5 V and I off = 100 na/μm) 25 nm-gate-length ZrO 2 /InAs/InAlAs MOSFETs Sanghoon Lee 1*, V. Chobpattana 2,C.-Y. Huang 1, B. J. Thibeault 1, W. Mitchell 1, S. Stemmer
More informationPattern Transfer CD-AFM. Resist Features on Poly. Poly Features on Oxide. Quate Group, Stanford University
Resist Features on Poly Pattern Transfer Poly Features on Oxide CD-AFM The Critical Dimension AFM Boot -Shaped Tip Tip shape is optimized to sense topography on vertical surfaces Two-dimensional feedback
More informationJOURNAL OF APPLIED PHYSICS 99,
JOURNAL OF APPLIED PHYSICS 99, 014501 2006 Demonstration and analysis of reduced reverse-bias leakage current via design of nitride semiconductor heterostructures grown by molecular-beam epitaxy H. Zhang
More informationPower MOSFET Zheng Yang (ERF 3017,
ECE442 Power Semiconductor Devices and Integrated Circuits Power MOSFET Zheng Yang (ERF 3017, email: yangzhen@uic.edu) Evolution of low-voltage (
More information6. LDD Design Tradeoffs on Latch-Up and Degradation in SOI MOSFET
110 6. LDD Design Tradeoffs on Latch-Up and Degradation in SOI MOSFET An experimental study has been conducted on the design of fully depleted accumulation mode SOI (SIMOX) MOSFET with regard to hot carrier
More informationOn-Wafer Integration of Nitrides and Si Devices: Bringing the Power of Polarization to Si
On-Wafer Integration of Nitrides and Si Devices: Bringing the Power of Polarization to Si The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.
More informationUNIT-VI FIELD EFFECT TRANSISTOR. 1. Explain about the Field Effect Transistor and also mention types of FET s.
UNIT-I FIELD EFFECT TRANSISTOR 1. Explain about the Field Effect Transistor and also mention types of FET s. The Field Effect Transistor, or simply FET however, uses the voltage that is applied to their
More informationWide Band-gap FETs for High Power Amplifiers
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, VOL.6, NO.3, SEPTEMBER, 2006 175 Wide Band-gap FETs for High Power Amplifiers Jinwook Burm and Jaekwon Kim Abstract Wide band-gap semiconductor electron
More informationSimulation of GaAs MESFET and HEMT Devices for RF Applications
olume, Issue, January February 03 ISSN 78-6856 Simulation of GaAs MESFET and HEMT Devices for RF Applications Dr.E.N.GANESH Prof, ECE DEPT. Rajalakshmi Institute of Technology ABSTRACT: Field effect transistor
More informationBasic Electronics. Introductory Lecture Course for. Technology and Instrumentation in Particle Physics Chicago, Illinois June 9-14, 2011
Basic Electronics Introductory Lecture Course for Technology and Instrumentation in Particle Physics 2011 Chicago, Illinois June 9-14, 2011 Presented By Gary Drake Argonne National Laboratory Session 3
More informationMOSFET & IC Basics - GATE Problems (Part - I)
MOSFET & IC Basics - GATE Problems (Part - I) 1. Channel current is reduced on application of a more positive voltage to the GATE of the depletion mode n channel MOSFET. (True/False) [GATE 1994: 1 Mark]
More informationA High Breakdown Voltage Two Zone Step Doped Lateral Bipolar Transistor on Buried Oxide Thick Step
A High Breakdown Voltage Two Zone Step Doped Lateral Bipolar Transistor on Buried Oxide Thick Step Sajad A. Loan, S. Qureshi and S. Sundar Kumar Iyer Abstract----A novel two zone step doped (TZSD) lateral
More informationLecture 33 - The Short Metal-Oxide-Semiconductor Field-Effect Transistor (cont.) April 30, 2007
6.720J/3.43J - Integrated Microelectronic Devices - Spring 2007 Lecture 33-1 Lecture 33 - The Short Metal-Oxide-Semiconductor Field-Effect Transistor (cont.) April 30, 2007 Contents: 1. MOSFET scaling
More information3084 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 60, NO. 4, AUGUST 2013
3084 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 60, NO. 4, AUGUST 2013 Dummy Gate-Assisted n-mosfet Layout for a Radiation-Tolerant Integrated Circuit Min Su Lee and Hee Chul Lee Abstract A dummy gate-assisted
More informationTransistor was first invented by William.B.Shockley, Walter Brattain and John Bardeen of Bell Labratories. In 1961, first IC was introduced.
Unit 1 Basic MOS Technology Transistor was first invented by William.B.Shockley, Walter Brattain and John Bardeen of Bell Labratories. In 1961, first IC was introduced. Levels of Integration:- i) SSI:-
More information4H-SiC V-Groove Trench MOSFETs with the Buried p + Regions
ELECTRONICS 4H-SiC V-Groove Trench MOSFETs with the Buried p + Regions Yu SAITOH*, Toru HIYOSHI, Keiji WADA, Takeyoshi MASUDA, Takashi TSUNO and Yasuki MIKAMURA ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
More informationECSE-6300 IC Fabrication Laboratory Lecture 9 MOSFETs. Lecture Outline
ECSE-6300 IC Fabrication Laboratory Lecture 9 MOSFETs Prof. Rensselaer Polytechnic Institute Troy, NY 12180 Office: CII-6229 Tel.: (518) 276-2909 e-mails: luj@rpi.edu http://www.ecse.rpi.edu/courses/s18/ecse
More informationCMOS Digital Integrated Circuits Lec 2 Fabrication of MOSFETs
CMOS Digital Integrated Circuits Lec 2 Fabrication of MOSFETs 1 CMOS Digital Integrated Circuits 3 rd Edition Categories of Materials Materials can be categorized into three main groups regarding their
More informationINTRODUCTION: Basic operating principle of a MOSFET:
INTRODUCTION: Along with the Junction Field Effect Transistor (JFET), there is another type of Field Effect Transistor available whose Gate input is electrically insulated from the main current carrying
More informationCharacterization of SOI MOSFETs by means of charge-pumping
Paper Characterization of SOI MOSFETs by means of charge-pumping Grzegorz Głuszko, Sławomir Szostak, Heinrich Gottlob, Max Lemme, and Lidia Łukasiak Abstract This paper presents the results of charge-pumping
More informationEECS130 Integrated Circuit Devices
EECS130 Integrated Circuit Devices Professor Ali Javey 11/01/2007 MOSFETs Lecture 5 Announcements HW7 set is due now HW8 is assigned, but will not be collected/graded. MOSFET Technology Scaling Technology
More informationHigh mobility 4H-SiC MOSFET using a combination of counter-doping and interface trap passivation
1 SiC MOS Workshop August 14 th 2014, University of Maryland High mobility 4H-SiC MOSFET using a combination of counter-doping and interface trap passivation Aaron Modic 1, A. Ahyi 1, G. Liu 2, Y. Xu 2,P.
More informationECE 5745 Complex Digital ASIC Design Topic 2: CMOS Devices
ECE 5745 Complex Digital ASIC Design Topic 2: CMOS Devices Christopher Batten School of Electrical and Computer Engineering Cornell University http://www.csl.cornell.edu/courses/ece5950 Simple Transistor
More informationAlGaN Polarization Graded Field Effect Transistors for High Linearity Microwave Applications
AlGaN Polarization Graded Field Effect Transistors for High Linearity Microwave Applications Shahadat H. Sohel, Hao Xue, Towhidur Razzak, Sanyam Bajaj, Yuewei Zhang, Wu Lu, Siddharth Rajan Department of
More informationInGaP/InGaAs Doped-Channel Direct-Coupled Field-Effect Transistors Logic with Low Supply Voltage
InGaP/InGaAs Doped-Channel Direct-Coupled Field-Effect Transistors Logic with Low Supply Voltage Jung-Hui Tsai, Wen-Shiung Lour,Tzu-YenWeng +, Chien-Ming Li + Department of Electronic Engineering, National
More informationSemiconductor Physics and Devices
Metal-Semiconductor and Semiconductor Heterojunctions The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) is one of two major types of transistors. The MOSFET is used in digital circuit, because
More informationFIELD EFFECT TRANSISTOR (FET) 1. JUNCTION FIELD EFFECT TRANSISTOR (JFET)
FIELD EFFECT TRANSISTOR (FET) The field-effect transistor (FET) is a three-terminal device used for a variety of applications that match, to a large extent, those of the BJT transistor. Although there
More informationElectronic Circuits for Mechatronics ELCT 609 Lecture 6: MOS-FET Transistor
Electronic Circuits for Mechatronics ELCT 609 Lecture 6: MOS-FET Transistor Assistant Professor Office: C3.315 E-mail: eman.azab@guc.edu.eg 1 Introduction Why we call it Transistor? The name came as an
More informationThree Terminal Devices
Three Terminal Devices - field effect transistor (FET) - bipolar junction transistor (BJT) - foundation on which modern electronics is built - active devices - devices described completely by considering
More informationHigh-Speed Scalable Silicon-MoS 2 P-N Heterojunction Photodetectors
High-Speed Scalable Silicon-MoS 2 P-N Heterojunction Photodetectors Veerendra Dhyani 1, and Samaresh Das 1* 1 Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi-110016,
More informationInnovative Technologies for RF & Power Applications
Innovative Technologies for RF & Power Applications > Munich > Nov 14, 2017 1 Key Technologies Key Technologies Veeco Market Focus Advanced Packaging, MEMS & RF Lighting, Display & Power Electronics Lithography
More informationCharge-Based Continuous Equations for the Transconductance and Output Conductance of Graded-Channel SOI MOSFET s
Charge-Based Continuous Equations for the Transconductance and Output Conductance of Graded-Channel SOI MOSFET s Michelly de Souza 1 and Marcelo Antonio Pavanello 1,2 1 Laboratório de Sistemas Integráveis,
More informationSUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION doi:10.1038/nature11293 1. Formation of (111)B polar surface on Si(111) for selective-area growth of InGaAs nanowires on Si. Conventional III-V nanowires (NWs) tend to grow in
More informationSupporting Information for Gbps terahertz external. modulator based on a composite metamaterial with a. double-channel heterostructure
Supporting Information for Gbps terahertz external modulator based on a composite metamaterial with a double-channel heterostructure Yaxin Zhang, Shen Qiao*, Shixiong Liang, Zhenhua Wu, Ziqiang Yang*,
More informationLecture-45. MOS Field-Effect-Transistors Threshold voltage
Lecture-45 MOS Field-Effect-Transistors 7.4. Threshold voltage In this section we summarize the calculation of the threshold voltage and discuss the dependence of the threshold voltage on the bias applied
More informationRecent ETHZ-YEBES Developments in Low-Noise phemts for Cryogenic Amplifiers
Receivers & Array Workshop 2010 September 20th, 2010 Recent ETHZ-YEBES Developments in Low-Noise phemts for Cryogenic Amplifiers Andreas R. Alt, Colombo R. Bolognesi Millimeter-Wave Electronics Group (MWE)
More information3-7 Nano-Gate Transistor World s Fastest InP-HEMT
3-7 Nano-Gate Transistor World s Fastest InP-HEMT SHINOHARA Keisuke and MATSUI Toshiaki InP-based InGaAs/InAlAs high electron mobility transistors (HEMTs) which can operate in the sub-millimeter-wave frequency
More informationGigahertz Ambipolar Frequency Multiplier Based on Cvd Graphene
Gigahertz Ambipolar Frequency Multiplier Based on Cvd Graphene The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation As Published
More informationOn-wafer seamless integration of GaN and Si (100) electronics
On-wafer seamless integration of GaN and Si (100) electronics The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation As Published
More informationChapter 13 Insulated Gate Nitride-Based Field Effect Transistors
Chapter 13 Insulated Gate Nitride-Based Field Effect Transistors M. Shur, G. Simin, S. Rumyantsev, R. Jain and R. Gaska Abstract Polarization doping related to the piezoelectric and spontaneous polarization
More informationE LECTROOPTICAL(EO)modulatorsarekeydevicesinoptical
286 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 26, NO. 2, JANUARY 15, 2008 Design and Fabrication of Sidewalls-Extended Electrode Configuration for Ridged Lithium Niobate Electrooptical Modulator Yi-Kuei Wu,
More informationECSE-6300 IC Fabrication Laboratory Lecture 7 MOSFETs. Lecture Outline
ECSE-6300 IC Fabrication Laboratory Lecture 7 MOSFETs Prof. Rensselaer Polytechnic Institute Troy, NY 12180 Office: CII-6229 Tel.: (518) 276-2909 e-mails: luj@rpi.edu http://www.ecse.rpi.edu/courses/s16/ecse
More informationCHAPTER 8 FIELD EFFECT TRANSISTOR (FETs)
CHAPTER 8 FIELD EFFECT TRANSISTOR (FETs) INTRODUCTION - FETs are voltage controlled devices as opposed to BJT which are current controlled. - There are two types of FETs. o Junction FET (JFET) o Metal
More informationGaN MMIC PAs for MMW Applicaitons
GaN MMIC PAs for MMW Applicaitons Miroslav Micovic HRL Laboratories LLC, 311 Malibu Canyon Road, Malibu, CA 9265, U. S. A. mmicovic@hrl.com Motivation for High Frequency Power sources 6 GHz 11 GHz Frequency
More informationThis Week s Subject. DRAM & Flexible RRAM. p-channel MOSFET (PMOS) CMOS: Complementary Metal Oxide Semiconductor
DRAM & Flexible RRAM This Week s Subject p-channel MOSFET (PMOS) CMOS: Complementary Metal Oxide Semiconductor CMOS Logic Inverter NAND gate NOR gate CMOS Integration & Layout GaAs MESFET (JFET) 1 Flexible
More informationPlanarization and Regrowth of Self-Aligned Ohmic Contacts on InGaAs
MBE 2008, Vancouver, B.C. Planarization and Regrowth of Self-Aligned Ohmic Contacts on InGaAs Mark Wistey, Greg Burek, Uttam Singisetti, Austin Nelson, Brian Thibeault, Joël Cagnon, Susanne Stemmer, Arthur
More informationEE4800 CMOS Digital IC Design & Analysis. Lecture 1 Introduction Zhuo Feng
EE4800 CMOS Digital IC Design & Analysis Lecture 1 Introduction Zhuo Feng 1.1 Prof. Zhuo Feng Office: EERC 730 Phone: 487-3116 Email: zhuofeng@mtu.edu Class Website http://www.ece.mtu.edu/~zhuofeng/ee4800fall2010.html
More informationWide Band-Gap Power Device
Wide Band-Gap Power Device 1 Contents Revisit silicon power MOSFETs Silicon limitation Silicon solution Wide Band-Gap material Characteristic of SiC Power Device Characteristic of GaN Power Device 2 1
More informationHigh-efficiency, high-speed VCSELs with deep oxidation layers
Manuscript for Review High-efficiency, high-speed VCSELs with deep oxidation layers Journal: Manuscript ID: Manuscript Type: Date Submitted by the Author: Complete List of Authors: Keywords: Electronics
More informationy y (12) Patent Application Publication (10) Pub. No.: US 2015/ A1 (19) United States (43) Pub. Date: Sep. 10, C 410C 422b 4200
(19) United States (12) Patent Application Publication (10) Pub. No.: US 2015/0255300 A1 He et al. US 201502553.00A1 (43) Pub. Date: Sep. 10, 2015 (54) (71) (72) (73) (21) (22) DENSELY SPACED FINS FOR
More informationFET(Field Effect Transistor)
Field Effect Transistor: Construction and Characteristic of JFETs. Transfer Characteristic. CS,CD,CG amplifier and analysis of CS amplifier MOSFET (Depletion and Enhancement) Type, Transfer Characteristic,
More informationDigital Electronics. By: FARHAD FARADJI, Ph.D. Assistant Professor, Electrical and Computer Engineering, K. N. Toosi University of Technology
K. N. Toosi University of Technology Chapter 7. Field-Effect Transistors By: FARHAD FARADJI, Ph.D. Assistant Professor, Electrical and Computer Engineering, K. N. Toosi University of Technology http://wp.kntu.ac.ir/faradji/digitalelectronics.htm
More informationTopic 3. CMOS Fabrication Process
Topic 3 CMOS Fabrication Process Peter Cheung Department of Electrical & Electronic Engineering Imperial College London URL: www.ee.ic.ac.uk/pcheung/ E-mail: p.cheung@ic.ac.uk Lecture 3-1 Layout of a Inverter
More informationSupplementary Figure 1 Schematic illustration of fabrication procedure of MoS2/h- BN/graphene heterostructures. a, c d Supplementary Figure 2
Supplementary Figure 1 Schematic illustration of fabrication procedure of MoS 2 /hon a 300- BN/graphene heterostructures. a, CVD-grown b, Graphene was patterned into graphene strips by oxygen monolayer
More informationDrive performance of an asymmetric MOSFET structure: the peak device
MEJ 499 Microelectronics Journal Microelectronics Journal 30 (1999) 229 233 Drive performance of an asymmetric MOSFET structure: the peak device M. Stockinger a, *, A. Wild b, S. Selberherr c a Institute
More information40nm Node CMOS Platform UX8
FUKAI Toshinori, IKEDA Masahiro, TAKAHASHI Toshifumi, NATSUME Hidetaka Abstract The UX8 is the latest process from NEC Electronics. It uses the most advanced exposure technology to achieve twice the gate
More informationIntegrated diodes. The forward voltage drop only slightly depends on the forward current. ELEKTRONIKOS ĮTAISAI
1 Integrated diodes pn junctions of transistor structures can be used as integrated diodes. The choice of the junction is limited by the considerations of switching speed and breakdown voltage. The forward
More informationHigh performance Hetero Gate Schottky Barrier MOSFET
High performance Hetero Gate Schottky Barrier MOSFET Faisal Bashir *1, Nusrat Parveen 2, M. Tariq Banday 3 1,3 Department of Electronics and Instrumentation, Technology University of Kashmir, Srinagar,
More informationChapter 1. Introduction
Chapter 1 Introduction 1.1 Introduction of Device Technology Digital wireless communication system has become more and more popular in recent years due to its capability for both voice and data communication.
More informationEE 5611 Introduction to Microelectronic Technologies Fall Thursday, September 04, 2014 Lecture 02
EE 5611 Introduction to Microelectronic Technologies Fall 2014 Thursday, September 04, 2014 Lecture 02 1 Lecture Outline Review on semiconductor materials Review on microelectronic devices Example of microelectronic
More informationTitle. Author(s)Uemura, T.; Baba, T. CitationIEEE Transactions on Electron Devices, 49(8): Issue Date Doc URL. Rights.
Title A three-valued D-flip-flop and shift register using Author(s)Uemura, T.; Baba, T. CitationIEEE Transactions on Electron Devices, 49(8): 1336-1 Issue Date 2002-08 Doc URL http://hdl.handle.net/2115/5577
More informationCollege of Engineering Department of Electrical Engineering and Computer Sciences University of California, Berkeley
College of Engineering Department of Electrical Engineering and Below are your weekly quizzes. You should print out a copy of the quiz and complete it before your lab section. Bring in the completed quiz
More informationLow Noise Dual Gate Enhancement Mode MOSFET with Quantum Valve in the Channel
Proceedings of the World Congress on Electrical Engineering and Computer Systems and Science (EECSS 2015) Barcelona, Spain, July 13-14, 2015 Paper No. 153 Low Noise Dual Gate Enhancement Mode MOSFET with
More information